Also known as: Airspy HF+, Airspy HF plus
Airspy HF+ is a software-defined radio optimised for the HF and low-VHF bands, with excellent dynamic range for receiving shortwave and weak low-band signals.1
Overview
Where a basic RTL-SDR cannot tune HF directly (needing an upconverter or direct-sampling mode), the HF+ is purpose-built for it — ideal for ionospheric shortwave reception.
Relevance to SDR
Choose the HF+ when HF or low-band is your target; GopherTrunk supports it as a receiver.
Sources
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Software-defined radio — Wikipedia, for background on the Airspy HF+ and HF-optimised SDR receivers. ↩